It's cool. It's not for me personally, but it will make a much better deal for a full-tower compared to the Switch 810 or the Cosmos II that I find.. Lacking. Hot swap is meh, I'd preferred less optical spots, three at most for those dual 5.25" res/pump and one aux (fan control?). The former is taste, though.
I dislike windows, so I'd hope to see a full-size panel coming, it would make it easier to sound-dampen as well. I dislike the Corsair drive-mounts (not seen the 900D's), and I think the C70 is mostly junk, so seeing them getting influneces from there to the 900D.. Hm.

Still, the better of the other super-premium Full-tower, but I'd personally go for SilverStone or Fractal Design Define XL R2.

I don't like it (sorry corsair) if I was going to get a case that big I would get the CaseLabs STH10 over this any day.

At $570 USD minimum (+costs of accessories, could be $100 more easily for the basic extras) + costs of importing it to the UK, it's an entirely different league. I mean sure, i agree that nobody can come close to case labs at the high end, but there's many that beat them at the lower end, and for the average enthusiast (if there was ever such a thing), the 900D is about as close as we'll ever get. $300 USD and it being available in the UK naturally (once released) means we'll be saving hundreds overall.